Excalibur

A holy Western sword belonging to King Arthur, Excalibur is blessed with magic that burns through the impure and give an incredible sharp edge. It first seen in Onimusha: Blade Warriors, been wielded by Samanosuke and later been dual-wielded by Mussashi along with the Bishamon Sword. It's next appearance was in Onimusha: Dawn of Dreams as Soki third strongest weapon in the game, with the obvious ability to use Holy element as an attack.